500 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lie 



65. Cerceris occipitomaculata Packard 



Figures 93, 173a,b,c 



Cerceris occipitomaculata Packard, 1866, p. 62. — Cresson, 1872, p. 229; 1887, p. 

 282.— Schletterer, 1887, p. 498.— Dalla Torre, 1897, p. 469.— Bridwell, 1898, 

 p. 209.— Ashmead, 1899, p. 295.— Smith, H. S., 1908, p. 368.— Stevens, 1917, 

 p. 422.— Mickel, 1917b, p. 449.— Carter, 1925, p. 133.— ScuUen, 1951, p. 1009. 



Cerceris fasciola Cresson, 1872, p. 230; 1887, p. 282.— Schletterer, 1887, p. 491.— 

 Ashmead, 1899, p. 295.— Viereck, 1906b, p. 234.— Banks, 1912a, p. 23.— 

 Viereck, 1916, pp. 695-696.— Washburn, 1918, p. 226, fig. 115.— Britton, 

 1920, p. 342.— Scullen, 1951, p. 1007 (new synonymy). 



Cerceris novomexicana Viereck and Cockerell, 1904, p. 137. — Scullen, 1951, p. 1009 

 (new synonymy). 



Female. — Length 11 mm. Black with creamy-yellow markings; 

 punctation somewhat smaller and more scattered than average; 

 pubescence average. 



Head slightly wider than the thorax; black except for large frontal 

 eye patches, the clypeal process, the lateral wings of the clypeus, 

 patch above the clypeal process, patch back of the compound eyes, 

 the base of the mandibles, and the scape, all of which are creamy 

 yellow; clypeal border with a prominent extension on the medial lobe 

 with denticle-like processes at the lateral angles; clypeal process 

 subequal in width to the length, relatively flat above, and with the 

 free margin slightly emarginate; mandibles with three denticles 

 closely fused at the base, the medial one much the larger; antennae 

 normal in form, scape creamy yellow, peduncle and flagellum fulvous. 



Thorax black except for two patches on the pronotum, the meta- 

 notum, large patches on the propodeum, and the tegulae, all of which 

 are creamy yellow; tegulae smooth; enclosure smooth except for a 

 medial groove and very limited punctation in the lateral angles; 

 mesosternal tubercles absent; first two pairs of legs are dark on the 

 basal segments to one-third of the femora, largely yellow beyond to 

 the apical segments of the tarsi, which are fulvous; the hindlegs are 

 dark at the base to and including the basal end of the femora, beyond 

 which they are largely yellow except the apical ends of the femora, 

 which are dark; wings are subhyaline but slightly darker at the apex. 



Abdomen with creamy-yellow subequal bands on terga 1 to 5, 

 that on tergum 1 divided; venter immaculate; pygidium with sides 

 converging to an apical rounded point. 



Male. — ^Length 10 mm. Black with creamy-yellow markings; 

 punctation and pubescence as in female. 



Head subequal in width to the thorax; black except for the entire 

 face, small spots back of the compound eyes, base of the mandibles, 

 and the scape, all of which are creamy yellow; clypeal margin slightly 

 extended from the medial lobe, showing two lateral, low, rounded 

 denticles, the usual medial one not evident; the surface of the medial 



